Include `--uuid` flag when documenting how to obtain director id
Include `--uuid` flag when documenting how to obtain director id

- This command only prints the uuid, while `status` prints other
  unnecessary info

Signed-off-by: Lyle Franklin <31e283733c7a4b3b6cb03b95ab535671c2112bbe@pivotal.io>

cloudfoundry/cf-mysql-release,cloudfoundry/cf-mysql-release,cloudfoundry/cf-mysql-release,cloudfoundry/cf-mysql-release